67 lines
2.4 KiB
C
67 lines
2.4 KiB
C
/*
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(C) Copyright IBM Corp. 2007, 2008
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of IBM nor the names of its contributors may be
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used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stddef.h>
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#include <errno.h>
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#include <sys/mman.h>
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#include "ea_internal.h"
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#include <ea.h>
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COMPAT_EA_ALIAS (mmap_ea);
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__ea void *mmap_ea (__ea void *start, size_ea_t length, int prot, int
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flags, int fd, off_t offset)
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{
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#ifdef __EA64__
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if (length > 0xffffffffULL) {
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errno = ENOMEM;
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return MAP_FAILED_EADDR;
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} else {
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return (__ea void *) mmap_eaddr ((unsigned long long) start,
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(size_t) length, prot, flags, fd, offset);
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}
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#else /* __EA32__ */
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unsigned long long res;
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/*
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* mmap_eaddr returns 64 bits. For ea32, only the lower 32 bits can be
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* returned.
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*/
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res = mmap_eaddr ((unsigned long long) (unsigned int) start, length,
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prot, flags, fd, offset);
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if (res != MAP_FAILED_EADDR && res > 0xffffffffULL) {
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munmap_eaddr (res, length);
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errno = ENOMEM;
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res = MAP_FAILED_EADDR;
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}
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return (__ea void *) (int) res;
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#endif
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}
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